thermal — ► ADJECTIVE 1) relating to heat. 2) (of a garment) made of a fabric that provides good insulation to keep the body warm. ► NOUN 1) an upward current of warm air, used by birds, gliders, and balloonists to gain height. 2) (thermals) thermal… … English terms dictionary

thermal — [thʉr′məl] adj. [Fr &LT; Gr thermē, heat: see WARM] 1. having to do with heat, hot springs, etc. 2. warm or hot ☆ 3. designating or of a loosely knitted material honeycombed with air spaces for insulation to help retain body heat [thermal… … English World dictionary